<template>
  <div>
    <select name="" id="" v-model="num" @change="change">
      <option :value="index" :label="i" v-for="(i,index) in list" :key="index" ></option>
    </select>
  </div>
</template>

<script>
export default {
  data () {
    return {
      list: [1111, 2111, 3111, 4111, 5111],
      num: ''
    }
  },
  watch: {
    change () {
      // 每次数据变化在这可以直接打印
    }
  }
}
</script>

<style>

</style>
